The Worldwide Iridium 3,000 minutes prepaid sim card offer low rates and global coverage with no contracts for iridium satellite phones airtime.This sim card is valid for 24 months from the activation date and can be reloaded. If you have valuable unused airtime remaining, you can extend the expiry date for 30 days, without having to recharge the card with more airtime. The Iridium Worldwide Prepaid Plans provide an ideal solution if you're working on short term or seasonal projects or if you are a worldwide traveler because this plan has the same rates for all countries and continents.